Dry-pipe valve.



'run vsrirrns PATENT orme-ii.

' THOMAS I. HIGGINs ANI) WILLIAM MCDERMOTT, or NEW BRIGHTON, NEW' Yoan.' I

DRY-Hirn VALVE.

To'aZZ whom t mag/concern Be it known that we, THOMAS P. HIGGINS and 'WILLIAM McDnnMo'rT, citizens of the Tnited States, residing at New Brighton,

Ainthe-county of Richmond, State of New orlnhave invented a new and useful.Dry-

Pipe Valve; and we do hereby declare the following to be a full, clear, and exact description ofthe invention, such .as willenable others skilled in theartto which it appertains to make and use the same.i

` This invention relates to the artof valves,

and particularly to an improved dry pipe valve designed for use'in connection with' sprinkler systems,` land for all other purposes for which a 'dry pipe valve can be used,

'One of the objects of the invent-ion is the `.provision of animproved valve to be located inthe piping of'a sprinkler system between the water and the spreader vor sprayer or sprinkler of the system, there being a presi sure 'of' air between the valve and the sprayer,spreader, or sprinkler, so t-liatwhen the sprinkler is opened, 'the air pressure will be released, which relea'sesthe .valve allowing its'spring to open thevalve, so that the inflow of water will pass to and through the sprinkler andl at the lsame time `sound an electrical lire alarm.

In practical fields the details of construction may necessitate alterations, falling within the scope of what is claimed.

in accordance with the invention. Fi`g. 2 is` A iol The invention comprises further features and combination of parts, as hereinafter set forth, sho'wn in the drawings and claimed.

f.Inthedrawings2 Figu're l is a vertical.

sectional view through the valve constructed a-tiansverse sectional view online 2-2 of Fig. 1. Fig. -3 is `an enlarged detail view of the oscillatory clapper arm or member.

'Referring to the drawings, 1 designates a valve casing having a water chamber 2, and' the twoair chambers 3 and l, and the alarm chamber flange 9, through the apertures or openings 10 of which, the bolts (not shown) of said supply pipe are designed to pass'. The wall of the casing 1- of the va'lvehas an opening,l

1l, fordraining the valve, which opening 11 and`lock nuts 38. ,l

The air chambers 3 and 4: cominunicate with each other by way of the pasis closed by the provision of a threadedplug i Specification of Letters Patent. Patented SOV, 23, 1915, Application filed August 19, 1915.. Seria1No.'46,270. l

12. /The wall 13 dividing the air chamber 3 -from the water chamber 2 has 'an opening 11'and thiswall 13 constitutes a seat 1 '5 for theidisk valve 16,. for closingtlie opening 14. A pipe 17 which 'connects to the sprinkler or` spreader (not shown) of the sprinkler system (not shown) communicates with the air chamber 3, owing to said' pipe 17 being' -bolted at 18 to the 'valve casing.

Access may be had to the chambers 3 and JL through the openings 19 and 20, whichv are closed `by the plates 21 and 22, bolted to the casing 1y b v the bolts 23 and23a. Access may behad to the alarm chamber 5 by. way of the -open- Y ing 21,' which is closed by vthe plate 25 secured 'to the casing 1 of the valve by the'- `bolts 26. Access/to said chambers yis made 4possible in this manner, for ,the purpose of cleaning the chambers, or forthe purpose of repairs or the .like when desired. .The wallV 27 between the alarm chamber 5 and the air chamber l has an opening 28, and the under surface of the wall 27 constitutes a valve Aseat for the disk valve 30, for. closing com'- munication between the alarm chamber' and the air chamber l, that is, when the 'air is in the chambers 3 andi and in thepipe 17 .ie-

i tween the sprinkler, spreader-tor spraye` and the valve. Air is vheld in said pipe 17 between the sprinkler (not shown) yand the valve, owing to thesprinkler being closed by any suitable sealing ineans,'and when the sealing means (not shown) vis destroyedby `ire,the air pressure between the sprinkler j and the valve is released. Pivotally mounted on the pin 7 is an oscillating member or clapper arm 32, to the arm 33v of which the disk'valve 16 is connected by the threaded .lug 3l having lock nuts 35. To 'the armBG of said clapper member the' disk valve30 is .I

likewise connected-bythe threaded lugV 37 The'iclapper memberhas .an enlarged cylindrical part 39, where it pivotally to oscillate the clapper member A32 to the'y position shown in dotted lines, th'atis, when the air pressure in the pipe 17 and the, air

I the water will rush intov the chambers 3 and chambers 3 and etV is broken. and in this case tandtinto the alarm chamber 5 (closing the circuit of the ala-rm mechanism (not shown)l thereby setting off the fire alarm) andv thence through the pipe 17 to and 4out through the sprinkler, spreader or sprayer,

thereb)7 assisting in putting out the tire. Slidably mounted in a socket 45 of 4the chamber '3 is an abutment member 4:6. held outwardli7 as shown in full lines by the tension ofthe springs 47, and when the clapper `member is thrown open by the tension of its spring. the arm 33 of said member will Contact with the abutment member 4G. so as to be limited to the position Shown in dotted lines. A terminal plug 50 is arranged in the upper wall of the alarm chamber 5. to

vmake electrical connections (not shown) with a fire alarm not shown) and a circuitcloser (not shown) designed to beupl'aced m the chamber 5. and when communication is had between the chambers l and 5. that is.

when the dapper member is thrown in the position as-sliown in dotted lines. the water being an electrical conductorwill close the- 'valve 30, for setting the valve and the clapper member. A tube 52 is threaded at 5? into the casing adjacent the alarm chamber 5 and has a-ball valve 53al cooperating with its seat -l to close the valve openingr so that when the water rushes into the alarm chamber 5 to close the circuit. the pressure of the water will close the ball valve 53a. thereby preventing an vl slight leakage t0 the alarm chamber.

The invention having been set forth. what is claimed as new and .useful is l. In a valveas set forth` a casing having two air chambers in communication with each other. an alarm chamber havinga port for communication with one of the air chambers. a wa-ter chamber .having a port -for communication with the other air chamber.

an oscillatorv member having valves adapted for closing said poits of communication between the alarm chamber and one air chamber. and the water'cliamber and the for `coxnmimicatio"n with the other air chani- 'air/chamber, and the water chamber and thel 1 other'air chamber under air Jpressure in the two air chambers, and means for oscillatingl said member to open said valves when said air pressure in said air chambers is released. 3. In a valve as set forth, a casing having two air chambers inv communication with each other, an alarm chamber having a port for communication with one of the air chambers, a water chamber having a port' for communication with the other air.V chamber, anw oscillatory member having ,valves adapted for closing said ports of communi cation between the alarm chamber and one air chamber, and the water chamber and the other air chamber under air pressure in the two air chambers. and means for oscillating said member to open said valves when said air pressure in said air chambers is released.

and abut-ment means in one of the air chambers to limit the oscillator)7 movement of said member. f 4; In a valve as set forth. a easing having two air chambers in communication withl each other. a pin extending transversel)T of the communication between the two chambers, an alarm chamber having a port for communication with one air chamber. a water chamber having a port for communication with the other air chamber. a clapper member pivotallv mounted upon said pin having disk valves at both ends for closing said ports of communication between -the alarm chamber and one air chamber and the water chamber and the other air chamber. when air pressure is held in said air chambers. said. clapper member, where it is pivoted upon the pin being hollowed out. a spring in said hollowed out portion of the clapper member and coiled about the pin, for oscillating' the clapper mem ber to open said talves. when the air pressure is released in said air chambers. and an abutment member in one of the air Challibers to limit the clapper member in its oscillatori7 movement.

In testimoniv whereof we have signed our names to this specification in the presence of two subscribing witnesses.

THOMAS Al?. HIGGINS. VILLIAM MCDERMOTT. lVitnesses EUGENE P. SHEvLIN. F. C. IVHITE. 

